Batman & tmnt Robins Origin story
Chapter 1 Casey Wayne origin
This origin story starts off like any other Batman origin story. With his parents getting gunned down in crime alley. Instead of Thomas Wayne being a doctor, He was a scientist who expected on a rat and 4 turtles, before Thomas was gunned down the 4 turtles had been stolen from him. Although the rat had already been turned in to his butler you took care of Thomas’ son after his untimely demise. Casey Wayne became Batman.